公开(公告)号：US08085017B2

公开(公告)日：2011-12-27

申请号：US12873102

申请日：2010-08-31

申请人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

发明人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

IPC分类号： G05F1/595

CPC分类号： H02M3/1584 ,  H02M2001/0032 ,  H02M2001/0041 ,  H02M2003/1586 ,  Y02B70/16

摘要： A pulse control system for a multiphase regulator including an error amplifier, a multiphase generator, and an adaptive controller. The error amplifier provides an error signal indicative of output voltage error. The multiphase generator develops modulation pulses for phases based on the error signal. The adaptive controller is responsive to a load indication signal and redirects at least one modulation pulse from a first of phase to a second phase. The load indication signal may be received from a microprocessor indicating a low power mode. The adaptive controller provides a smooth and efficient transition to low load conditions by dropping operation of one or more phases and redirecting modulation pulses to the remaining one or more phases, and reduced phases improve power efficiency for the low load conditions.

摘要翻译： 一种用于多相调节器的脉冲控制系统，包括误差放大器，多相发生器和自适应控制器。 误差放大器提供指示输出电压误差的误差信号。 多相发生器根据误差信号产生相位调制脉冲。 自适应控制器响应于负载指示信号并将至少一个调制脉冲从第一相重定向到第二相。 可以从指示低功率模式的微处理器接收负载指示信号。 自适应控制器通过丢弃一个或多个相的操作并将调制脉冲重定向到剩余的一个或多个相位来提供对低负载条件的平滑和有效的转换，并且降低的相位提高了低负载条件下的功率效率。

公开(公告)号：US20100320977A1

公开(公告)日：2010-12-23

申请号：US12873102

申请日：2010-08-31

申请人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

发明人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

IPC分类号： G05F1/00

CPC分类号： H02M3/1584 ,  H02M2001/0032 ,  H02M2001/0041 ,  H02M2003/1586 ,  Y02B70/16

摘要： A pulse control system for a multiphase regulator including an error amplifier, a multiphase generator, and an adaptive controller. The error amplifier provides an error signal indicative of output voltage error. The multiphase generator develops modulation pulses for phases based on the error signal. The adaptive controller is responsive to a load indication signal and redirects at least one modulation pulse from a first of phase to a second phase. The load indication signal may be received from a microprocessor indicating a low power mode. The adaptive controller provides a smooth and efficient transition to low load conditions by dropping operation of one or more phases and redirecting modulation pulses to the remaining one or more phases, and reduced phases improve power efficiency for the low load conditions.

摘要翻译： 一种用于多相调节器的脉冲控制系统，包括误差放大器，多相发生器和自适应控制器。 误差放大器提供指示输出电压误差的误差信号。 多相发生器根据误差信号产生相位调制脉冲。 自适应控制器响应于负载指示信号并将至少一个调制脉冲从第一相重定向到第二相。 可以从指示低功率模式的微处理器接收负载指示信号。 自适应控制器通过丢弃一个或多个相的操作并将调制脉冲重定向到剩余的一个或多个相位来提供对低负载条件的平滑和有效的转换，并且降低的相位提高了低负载条件下的功率效率。

公开(公告)号：US07812581B2

公开(公告)日：2010-10-12

申请号：US11954888

申请日：2007-12-12

申请人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

发明人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

IPC分类号： G05F1/595

CPC分类号： H02M3/1584 ,  H02M2001/0032 ,  H02M2001/0041 ,  H02M2003/1586 ,  Y02B70/16

摘要： A multiphase regulator which includes an output node developing an output voltage, a feedback circuit determining error of the output voltage and providing a compensation signal indicative thereof, at least three phase circuits coupled in parallel to the output node, and an adaptive controller. Each phase circuit includes a modulation circuit and a switch circuit. Each modulation circuit receives the compensation signal and generates pulses on a corresponding one of the pulse modulation signals. Each switch circuit is coupled to the output node and is controlled by a corresponding pulse modulation signal. The adaptive controller is responsive to a load indication signal, such as indicating a low load condition, and drops operation of at least one of the phase circuits and adds at least one pulse to a pulse modulation signal of each remaining phase circuit.

摘要翻译： 多相调节器，其包括产生输出电压的输出节点，确定输出电压的误差的反馈电路，并提供指示其的补偿信号，与输出节点并联耦合的至少三相电路以及自适应控制器。 每相电路包括调制电路和开关电路。 每个调制电路接收补偿信号并在对应的一个脉冲调制信号上产生脉冲。 每个开关电路耦合到输出节点并由对应的脉冲调制信号控制。 自适应控制器响应诸如指示低负载状况的负载指示信号，并且降低至少一个相位电路的操作，并且将至少一个脉冲添加到每个剩余相位电路的脉冲调制信号。

公开(公告)号：US08018367B2

公开(公告)日：2011-09-13

申请号：US12631998

申请日：2009-12-07

申请人： Chun Cheung ,  Weihong Qiu ,  Robert H. Isham ,  Mir Mahin

发明人： Chun Cheung ,  Weihong Qiu ,  Robert H. Isham ,  Mir Mahin

IPC分类号： H03M1/12

CPC分类号： H03M1/20 ,  G01R27/14

摘要： An integrated circuit has a single input pin for determining a value associated with a resistor divider. First circuitry determines a resistor ratio of the resistor divider through the single input pin. A first register stores a first group of bits representing the resistor ratio. The first group of bits represents the least significant bits of the value. Second circuitry determines an equivalent resistance of the resistor divider through the single input pin. A second register stores a second group of bits representing the equivalent resistance.

摘要翻译： 集成电路具有用于确定与电阻分压器相关联的值的单个输入引脚。 第一个电路通过单个输入引脚确定电阻分压器的电阻比。 第一寄存器存储表示电阻器比率的第一组位。 第一组位表示该值的最低有效位。 第二个电路通过单个输入引脚确定电阻分压器的等效电阻。 第二寄存器存储表示等效电阻的第二组位。

公开(公告)号：US20080272752A1

公开(公告)日：2008-11-06

申请号：US11954888

申请日：2007-12-12

申请人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

发明人： Weihong Qiu ,  Robert H. Isham ,  Chun Cheung

IPC分类号： G05F1/00

CPC分类号： H02M3/1584 ,  H02M2001/0032 ,  H02M2001/0041 ,  H02M2003/1586 ,  Y02B70/16

摘要： A multiphase regulator which includes an output node developing an output voltage, a feedback circuit determining error of the output voltage and providing a compensation signal indicative thereof, at least three phase circuits coupled in parallel to the output node, and an adaptive controller. Each phase circuit includes a modulation circuit and a switch circuit. Each modulation circuit receives the compensation signal and generates pulses on a corresponding one of the pulse modulation signals. Each switch circuit is coupled to the output node and is controlled by a corresponding pulse modulation signal. The adaptive controller is responsive to a load indication signal, such as indicating a low load condition, and drops operation of at least one of the phase circuits and adds at least one pulse to a pulse modulation signal of each remaining phase circuit.

摘要翻译： 多相调节器，其包括产生输出电压的输出节点，确定输出电压的误差的反馈电路，并提供指示其的补偿信号，与输出节点并联耦合的至少三相电路以及自适应控制器。 每相电路包括调制电路和开关电路。 每个调制电路接收补偿信号并在对应的一个脉冲调制信号上产生脉冲。 每个开关电路耦合到输出节点并由对应的脉冲调制信号控制。 自适应控制器响应诸如指示低负载状况的负载指示信号，并且降低至少一个相位电路的操作，并且将至少一个脉冲添加到每个剩余相位电路的脉冲调制信号。

公开(公告)号：US07453246B2

公开(公告)日：2008-11-18

申请号：US11383878

申请日：2006-05-17

申请人： Weihong Qiu ,  Robert H. Isham ,  Zhixiang Liang

发明人： Weihong Qiu ,  Robert H. Isham ,  Zhixiang Liang

IPC分类号： G05F1/56

CPC分类号： H02M3/156 ,  H02M3/33507

摘要： An adaptive pulse positioning system for a voltage converter providing an output voltage, the system including a PWM generation circuit, a sensor, and a pulse positioning circuit. The PWM generation circuit generates a PWM signal with PWM pulses for controlling the output voltage of the voltage controller. The sensor senses an output load condition of the voltage converter and provides a load signal indicative thereof. The pulse positioning circuit adaptively positions the PWM pulses based on the load signal. A method of adaptively positioning PWM pulses that are used to control an output voltage of a voltage regulator including generating a series of PWM pulses based on a clock signal, sensing an output load condition, and adaptively shifting the series of PWM pulses based on the output load condition.

摘要翻译： 一种用于提供输出电压的电压转换器的自适应脉冲定位系统，该系统包括PWM生成电路，传感器和脉冲定位电路。 PWM生成电路生成PWM信号，PWM脉冲用于控制电压控制器的输出电压。 传感器感测电压转换器的输出负载状态，并提供指示其的负载信号。 脉冲定位电路根据负载信号自适应地定位PWM脉冲。 一种自适应地定位用于控制电压调节器的输出电压的PWM脉冲的方法，包括基于时钟信号产生一系列PWM脉冲，感测输出负载条件，以及基于输出自适应地移位一系列PWM脉冲 负载条件。

公开(公告)号：US20100141225A1

公开(公告)日：2010-06-10

申请号：US12492397

申请日：2009-06-26

申请人： Robert H. Isham ,  Weihong Qiu

发明人： Robert H. Isham ,  Weihong Qiu

IPC分类号： G05F1/00 ,  H03K7/04

CPC分类号： H03K7/08 ,  H02M3/156 ,  H02M3/1584 ,  H03K7/04

摘要： An adaptive pulse positioning modulator including a sense circuit which provides a compensation signal indicative of output voltage error, a filter circuit having an input receiving the compensation signal and an output providing an adjust signal, a leading ramp circuit which provides a repetitive first leading edge ramp signal having a slope which is adjusted by the adjust signal, a comparator circuit which provides a first start trigger signal when the first leading edge ramp signal reaches the compensation signal and a first end trigger signal when a first trailing edge ramp signal reaches the compensation signal, a trailing ramp circuit which initiates ramping of the first trailing edge ramp signal when the first start trigger signal is provided, and a pulse control logic which asserts pulses on a PWM signal based on the trigger signals.

摘要翻译： 一种自适应脉冲定位调制器，包括提供表示输出电压误差的补偿信号的检测电路，具有接收补偿信号的输入端和提供调整信号的输出端的滤波器电路，提供重复的第一前沿斜坡 信号具有通过调节信号调整的斜率;比较电路，当第一前沿斜坡信号达到补偿信号时提供第一起始触发信号，当第一后沿斜坡信号达到补偿信号时提供第一起始触发信号 ，当提供第一启动触发信号时启动第一后沿斜坡信号的斜坡的拖尾斜坡电路，以及基于触发信号在PWM信号上断言脉冲的脉冲控制逻辑。

公开(公告)号：US20080197824A1

公开(公告)日：2008-08-21

申请号：US11694308

申请日：2007-03-30

申请人： Weihong Qiu ,  Shangyang Xiao ,  Robert H. Isham

发明人： Weihong Qiu ,  Shangyang Xiao ,  Robert H. Isham

IPC分类号： G05F1/00

CPC分类号： H02M3/1584 ,  H02M3/285

摘要： A pulse width modulation (PWM) modulator for a multiphase power converter and related adaptive firing order (AFO) method includes a multiphase leading edge generator having pulse generating circuitry associated with each of the regulator phases, wherein the pulse generating circuitry generates phase pulses associated with each of the phases. An adaptive firing order (AFO) controller having circuitry including a mixer receives and sums the phase pulses into a summing signal and uses the summing signal to generate a series of turn-on pulses therefrom. A multiphase PWM generator has inputs coupled to an output of the AFO controller coupled to receive the series of turn-on pulses, the multiphase PWM generator having circuitry for generating said PWM signals therefrom. An adaptive firing order (AFO) controlled multi-phase power converter includes a plurality of parallel connected regulator phases controlled by respective pulse width modulation (PWM) signals provided by the PWM modulator.

摘要翻译： 用于多相功率转换器的脉宽调制（PWM）调制器和相关的自适应点火顺序（AFO）方法包括具有与每个调节器相位相关联的脉冲发生电路的多相前沿发生器，其中脉冲发生电路产生与 每个阶段。 具有包括混合器的电路的自适应点火顺序（AFO）控制器接收并将相位脉冲求和到求和信号中，并且使用求和信号从其产生一系列导通脉冲。 多相PWM发生器具有耦合到耦合以接收一系列导通脉冲的AFO控制器的输出的输入，所述多相PWM发生器具有用于从其产生所述PWM信号的电路。 自适应点火顺序（AFO）控制的多相功率转换器包括由PWM调制器提供的相应的脉冲宽度调制（PWM）信号控制的多个并联的调节器相位。

公开(公告)号：US08188721B2

公开(公告)日：2012-05-29

申请号：US12492397

申请日：2009-06-26

申请人： Robert H. Isham ,  Weihong Qiu

发明人： Robert H. Isham ,  Weihong Qiu

IPC分类号： G05F1/40

CPC分类号： H03K7/08 ,  H02M3/156 ,  H02M3/1584 ,  H03K7/04

摘要： An adaptive pulse positioning modulator including a sense circuit which provides a compensation signal indicative of output voltage error, a filter circuit having an input receiving the compensation signal and an output providing an adjust signal, a leading ramp circuit which provides a repetitive first leading edge ramp signal having a slope which is adjusted by the adjust signal, a comparator circuit which provides a first start trigger signal when the first leading edge ramp signal reaches the compensation signal and a first end trigger signal when a first trailing edge ramp signal reaches the compensation signal, a trailing ramp circuit which initiates ramping of the first trailing edge ramp signal when the first start trigger signal is provided, and a pulse control logic which asserts pulses on a PWM signal based on the trigger signals.

摘要翻译： 一种自适应脉冲定位调制器，包括提供表示输出电压误差的补偿信号的检测电路，具有接收补偿信号的输入端和提供调整信号的输出端的滤波器电路，提供重复的第一前沿斜坡 信号具有通过调节信号调整的斜率;比较电路，当第一前沿斜坡信号达到补偿信号时提供第一起始触发信号，当第一后沿斜坡信号达到补偿信号时提供第一起始触发信号 ，当提供第一启动触发信号时启动第一后沿斜坡信号的斜坡的拖尾斜坡电路，以及基于触发信号在PWM信号上断言脉冲的脉冲控制逻辑。

公开(公告)号：US07932704B1

公开(公告)日：2011-04-26

申请号：US12359569

申请日：2009-01-26

申请人： Robert H. Isham ,  Weihong Qiu

发明人： Robert H. Isham ,  Weihong Qiu

IPC分类号： G05F1/10 ,  G05F1/40

CPC分类号： H02M3/1584 ,  H02M2001/0025

摘要： A modulator for providing control pulses on a pulse control signal for controlling operation of a DC-DC converter is disclosed which includes a comparator, pulse control logic, a memory circuit and a switch circuit. The comparator compares a timing waveform with a compensation signal and provides a comparison signal with preliminary pulses. The pulse logic circuit receives the comparison signal and provides normal pulses on a normal pulse signal. The pulse logic circuit selects only those preliminary pulses which are provided during a permissible time window of each period of the periodic timing waveform. The memory circuit provides a pulse indication whenever a normal pulse does not occur on the pulse signal during any switching period. The switch circuit selects between the normal pulse signal and the comparison signal based on the pulse indication for providing the control pulses.

摘要翻译： 公开了一种用于在控制DC-DC转换器的操作的脉冲控制信号上提供控制脉冲的调制器，其包括比较器，脉冲控制逻辑，存储器电路和开关电路。 比较器将定时波形与补偿信号进行比较，并将比较信号与初步脉冲进行比较。 脉冲逻辑电路接收比较信号并在正常脉冲信号上提供正常脉冲。 脉冲逻辑电路仅选择在周期性定时波形的每个周期的允许时间窗口期间提供的那些初步脉冲。 每当在任何切换周期期间脉冲信号上不发生正常脉冲时，存储电路提供脉冲指示。 开关电路基于用于提供控制脉冲的脉冲指示，在正常脉冲信号和比较信号之间进行选择。